- `TRANSADMIN_LANGUAGES`: a tuple of tuples for available languages for the admin. Reads the settings.LANGUAGES by default.- `TRANSADMIN_CONTEXTS`: a tuple of tuples for available context. Free text by default.- `TRANSADMIN_FALLBACK_LANGUAGE`: a string representing the code of the languageto fallback to if a string is not translated into the current language.No fallback by default, displays the untranslated text.